General Science - Physics MCQs

Physics Objective (Multiple Choice) General Knowledge & General Science Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examinations.

71. Which of the following is correct about mechanical waves?

[A] they require a medium to propagate
[B] they don’t require a medium to propagate
[C] may or may not require a medium to propagate
[D] None of the above

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72. What kind of waves are produced in a cylinder containing a liquid by moving its piston back and forth?

[A] Transverse
[B] Longitudinal
[C] Transverse or longitudinal
[D] None of the above

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73. What do we call the magnitude of the maximum disturbance in the medium on either side of the mean value called as?

[A] Frequency
[B] Angular Displacement
[C] Amplitude
[D] Wave number

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74. Which of the following is correct about the properties of Sound waves?

[A] Sound waves are longitudinal waves
[B] Sound waves are transverse waves
[C] Sound waves are both longitudinal and transverse
[D] None of the above

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75. Which of the following represents Boyle’s law?

[A] Pressure = Volume when temperature is constant
[B] Pressure x Volume = constant when temperature is constant
[C] Pressure =2 x Volume when temperature is constant
[D] None of the above

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76. What is meant by Calorimetry?

[A] Measurement of heat
[B] Measurement of temperature
[C] Measurement of specific heat capacity
[D] None of the above

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77. Which of the following is correct about Convection?

[A] It is possible in solids only
[B] It is possible in fluids only
[C] It is possible in solids and gases only
[D] None of the above

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78. What is the branch of physics that deals with the concepts of heat and temperature and the inter-conversion of heat and other forms of energy is known as?

[A] Calorimetry
[B] Thermodynamics
[C] Thermostatics
[D] Electrostatics

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79. How many joules are there in one calorie?

[A] 3.186 J
[B] 4.186 J
[C] 5.186 J
[D] 6.186 J

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80. Which of the following is the mirror formula?

[A] v + u =f
[B] 1/v + 1/u = 1/f
[C] 1/v + 1/u = f
[D] None of the above

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